105503388865 has 32 divisors (see below), whose sum is σ = 149512320000. Its totient is φ = 71429327424.

The previous prime is 105503388857. The next prime is 105503388877. The reversal of 105503388865 is 568883305501.

It is not a de Polignac number, because 105503388865 - 2³ = 105503388857 is a prime.

It is a super-2 number, since 2×105503388865² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 253870 + ... + 524839.

It is an arithmetic number, because the mean of its divisors is an integer number (4672260000).

Almost surely, 2^105503388865 is an apocalyptic number.

It is an amenable number.

105503388865 is a deficient number, since it is larger than the sum of its proper divisors (44008931135).

105503388865 is an frugal number, since it uses more digits than its factorization.

105503388865 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 778814 (or 778800 counting only the distinct ones).

The product of its (nonzero) digits is 3456000, while the sum is 52.

The spelling of 105503388865 in words is "one hundred five billion, five hundred three million, three hundred eighty-eight thousand, eight hundred sixty-five".